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Subtraction by Counting Up Worksheet

Mental maths lesson 5: Subtract by counting up · Set 112 · 40 questions
TalentJR

How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.

NameDateTime takenScore ___ / 40
  1. 1.308 − 286 =
  2. 2.115 − 79 =
  3. 3.116 − 75 =
  4. 4.88 − 75 =
  5. 5.59 − 34 =
  6. 6.1006 − 997 =
  7. 7.228 − 177 =
  8. 8.77 − 34 =
  9. 9.216 − 197 =
  10. 10.72 − 25 =
  11. 11.226 − 187 =
  12. 12.220 − 178 =
  13. 13.64 − 33 =
  14. 14.108 − 92 =
  15. 15.69 − 44 =
  16. 16.130 − 77 =
  17. 17.213 − 182 =
  18. 18.1021 − 988 =
  19. 19.206 − 187 =
  20. 20.1029 − 977 =
  21. 21.60 − 42 =
  22. 22.57 − 35 =
  23. 23.304 − 298 =
  24. 24.90 − 64 =
  25. 25.91 − 57 =
  26. 26.1018 − 989 =
  27. 27.228 − 189 =
  28. 28.114 − 92 =
  29. 29.1023 − 984 =
  30. 30.79 − 38 =
  31. 31.107 − 59 =
  32. 32.303 − 276 =
  33. 33.91 − 59 =
  34. 34.106 − 77 =
  35. 35.71 − 25 =
  36. 36.103 − 56 =
  37. 37.110 − 84 =
  38. 38.301 − 293 =
  39. 39.55 − 48 =
  40. 40.527 − 496 =

Answer key

  1. 22
  2. 36
  3. 41
  4. 13
  5. 25
  6. 9
  7. 51
  8. 43
  9. 19
  10. 47
  11. 39
  12. 42
  13. 31
  14. 16
  15. 25
  16. 53
  17. 31
  18. 33
  19. 19
  20. 52
  21. 18
  22. 22
  23. 6
  24. 26
  25. 34
  26. 29
  27. 39
  28. 22
  29. 39
  30. 41
  31. 48
  32. 27
  33. 32
  34. 29
  35. 46
  36. 47
  37. 26
  38. 8
  39. 7
  40. 31

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